WO2014032581A1

WO2014032581A1 - Transfer switch appliance

Info

Publication number: WO2014032581A1
Application number: PCT/CN2013/082434
Authority: WO
Inventors: 曲德刚; 周密; 巴黎; 沈迪; 尤安顺
Original assignee: 上海电科电器科技有限公司; 浙江正泰电器股份有限公司
Priority date: 2012-08-30
Filing date: 2013-08-28
Publication date: 2014-03-06
Also published as: EP2892068B1; EP2892068A4; BR112015004067B1; CN103681025A; CN103681025B; EP2892068A1; BR112015004067A2

Abstract

Disclosed is a transfer switch appliance, installed between a primary side power source and a backup side power source, comprising: a front base, a rear base, a contact system, and an operating system. The front base and the rear base define a space. The contact system is installed within the space. The contact system is in contact with a break circuit. The contact system comprises a dynamic contact and a static contact. The dynamic contact comprises three working positions, namely a primary side, an intermediate position, and a backup side. The operating system is installed on the front base. The operating system is an energy storage mechanism implementing breaking/engaging operations. An operating mechanism is connected to the dynamic contact via a connecting rod. The operating system comprises a primary side operating mechanism and a backup side operating mechanism connected by a gear set. The primary side operating mechanism and the backup side operating mechanism respectively are installed on the upper and lower sides of the front base. The primary side operating mechanism and the backup side operating mechanism are connected to a lever or a motor via a common shaft. The lever or the motor completes an energy storage operation with respect to both the primary side operating mechanism and the backup side operating mechanism within one revolution.

Description

Switching switch electrical technology

The present invention relates to the field of low voltage electrical appliances, and more particularly to a transfer switch appliance having automatic conversion capability. Background technique

The existing integrated automatic transfer switch electrical appliances mostly use electromagnets, linear motors or manual direct rotation to connect the common power supply side or the standby power supply side main shaft to drive the contact system to move to the closed position. Since the force generated by the electromagnet is limited by the volume, At the same time, it is difficult to generate a large operating force by direct manual operation, and the capacity of the changeover switch is limited. If the large-capacity integrated automatic transfer switch unit uses the previous electromagnet, linear motor or manually operated operating system, it will require a large volume and low reliability. Summary of the invention

SUMMARY OF THE INVENTION The present invention is directed to a high capacity switching switch appliance having three operating positions and capable of automatic operation.

In accordance with an embodiment of the present invention, a transfer switch appliance is provided that is mounted between a common side power source and a backup side power source, including: a front base and a rear base, a contact system, and an operating system. The front base and rear base combination define a space. The contact system is installed in the space, the contact system is connected to and disconnected from the circuit, the contact system comprises a movable contact and a static contact, and the movable contact comprises three working positions of a common side, a middle position and a standby side. The operating system is mounted on the front base. The operating system is an energy storage mechanism that implements a split operation. The operating mechanism is connected to the movable contact through a connecting rod. The operating system includes a common side operating mechanism and a standby side operating mechanism connected by the gear set. The common side operating mechanism and the standby side operating mechanism are respectively mounted on the upper and lower sides of the front base, and the common side operating mechanism and the standby side operating mechanism are connected to the handle or the motor through a common shaft. The handle or motor completes the energy storage operation for both the common side operating mechanism and the standby side operating mechanism within one revolution.

In one embodiment, there is an interlock between the common side operating mechanism and the standby side operating mechanism. The interlocking device ensures that the standby power supply side is disconnected when the common side power supply is closed, and that the common power supply side is disconnected when the standby power supply side is closed. The interlocking device includes a first interlocking member and a second interlocking member symmetrically arranged, the first interlocking member includes a first cantilever, a first lever, a first shaft and a first connecting member, and the first cantilever is welded to the common side operation On the main shaft of the mechanism, the first cantilever is connected to one end of the first lever through a first shaft, the other end of the first lever is connected to the first connecting member, and the first connecting member is mounted on the side plate of the standby side operating mechanism. The second interlocking member includes a second cantilever, a second lever, a second shaft and a second connecting member, the second cantilever is welded to the main shaft of the standby side operating mechanism, and the second cantilever is connected to one end of the second lever through the second shaft The other end of the second lever is connected to the second connecting member, and the second connecting member is mounted on the side plate of the common side operating mechanism. When the common side operating mechanism is closed, the main shaft of the common side operating mechanism rotates to the closing position, the first cantilever rotates accordingly, the first connecting member rotates by the first lever, and the first connecting member rotates the opening shaft of the standby side operating mechanism. Press to disconnect the standby side operating mechanism. When the standby side operating mechanism is closed, the main shaft of the standby side operating mechanism rotates to the closing position, the second cantilever rotates accordingly, the second connecting member rotates by the second lever, and the second connecting member rotates the opening shaft of the common side operating mechanism. Press to disconnect the common side operating mechanism.

In an embodiment, in order to realize automatic operation, the transfer switch appliance further includes a controller, and the controller collects voltage signals of the common side power source and the standby side power source, and is between the common side power source and the standby side power source according to the collected voltage signal. Switch.

In one embodiment, the contact system is provided with an arc extinguishing chamber outside the contacts of the movable contact and the static contact, and the arc extinguishing chamber includes a pilot arc, an arc extinguishing grid and a pressure plate with a hole, and the plurality of arc chutes The vertical arrangement of the sheets is arranged to cross each other, the arc-lead piece is mounted on the bottom of the arc-extinguishing grid, and a plurality of plated plates are arranged above the arc-extinguishing grid, and a plurality of perforated platens are stacked, and a plurality of perforated platens are arranged. The positions of the holes on the top are arranged in a cross.

In one embodiment, the contact system has a busbar that connects the common side of the common side power supply and the backup side power supply, the busbar is connected to the plurality of parallel contact plates by a soft connection, and the movable contact is mounted on the contact plate. The moving contact has a protruding contact, and the static contact is convex.

In one embodiment, the handle or motor stores energy to the common side operating mechanism through a common side cam, the standby side operating mechanism stores energy through the spare side cam, and the common side operating mechanism and the standby side operating mechanism are cross-fitted on the front base. The front base and the rear base are insulated bases. In one embodiment, the transfer switch appliance further includes an auxiliary contact, a terminal block, a closing electromagnet, a shunt release, and a contactor. The auxiliary contacts and the terminal block are respectively connected to the corresponding functional components, including the closing electromagnet, the shunt release, the contactor, the motor and the controller, and are connected to the external by the terminal block for remote control and communication functions.

The transfer switch electric appliance of the invention adopts an energy storage type operating system, so that the large-capacity transfer switch electric appliance realizes the characteristics of small volume, large capacity, full function and high reliability. DRAWINGS

The above and other features, advantages and advantages of the present invention will become more apparent from the description of the appended claims appended claims

1a and 1b disclose structural views of a transfer switch appliance in accordance with an embodiment of the present invention.

2 is a diagram showing the internal structure of a transfer switch appliance in accordance with an embodiment of the present invention. FIG. 3 discloses a block diagram of an operating system in accordance with an embodiment of the present invention.

Figure 4 is a block diagram showing the construction of a gear set in an operating system of a transfer switch appliance in accordance with an embodiment of the present invention.

Figure 5 is a block diagram showing the interlocking components of the operating system of the transfer switch appliance in accordance with an embodiment of the present invention.

Figure 6 discloses a structural view of a contact system of a transfer switch appliance in accordance with an embodiment of the present invention.

Fig. 7 is a view showing the construction of an arc extinguishing chamber of a transfer switch device in accordance with an embodiment of the present invention.

8 is a structural view of a controller of a transfer switch appliance according to an embodiment of the present invention. FIGS. 9a, 9b, 9c, and 9d disclose auxiliary contacts, terminals, and the like in a transfer switch device according to an embodiment of the present invention. The structural diagram of the contactor. detailed description Referring to FIGS. 1 to 9, FIGS. 1 to 9 disclose structural views of a transfer switch device according to an embodiment of the present invention, including a general structural view and an exploded structural view of each component therein.

As shown, the transfer switch unit 100 is mounted between a common side power source and a backup side power source. The transfer switch unit 100 includes a front base 102 and a rear base 103, a contact system, and an operating system 101.

The front base 102 and the rear base 103 combine to define a space, and in one embodiment, the front base 102 and the rear base 103 are insulated bases. The combined front base 102 and rear base 103 are separated into four phases, and the contact system is mounted in a space composed of the front base 102 and the rear base 103. The contact system turns the circuit on and off, and the contact system includes a movable contact 105 and a stationary contact 106. There is a pair of moving contacts 105 and stationary contacts 106 in each phase, and an arc extinguishing chamber 104. The combined base is provided with a common side connecting busbar 107, a common side connecting busbar 108, and a spare side connecting busbar 109, which are connected to respective power inlet and outlet ends. The movable contact 105 includes three working positions of a common side, a middle position, and a spare side. The operating system 101 is mounted on a front base, and the operating system 101 is an energy storage mechanism that implements a split operation. The operating mechanism is coupled to the movable contact 105 via a connecting rod 131, and the operating system 101 includes a common side operation connected by the gear set 1 13 Mechanism and standby side operating mechanism. The common side operating mechanism and the standby side operating mechanism are respectively mounted on the upper and lower sides of the front base. In one embodiment, the common side operating mechanism and the standby side operating mechanism are cross-fitted on the front base. The common side operating mechanism and the standby side operating mechanism are connected to the handle or motor 124 via a common shaft 1 14 . The handle or motor 124 performs the energy storage operation for both the common side operating mechanism and the standby side operating mechanism within a rotation of 360°. In one embodiment, the handle or motor 124 stores energy to the common side operating mechanism through the common side cams 1 15 and the standby side operating mechanism through the spare side cams 16 .

The common side operating mechanism and the standby side operating mechanism are in the form of an up-and-down cross configuration, so that the longitudinal dimension structure of the product can be reduced. Since the handle or motor can rotate 360. The energy storage is completed for both the normal side and the standby side, thus reducing the lateral structural size of the product.

In order to ensure the operational safety of the common side operating mechanism and the standby side operating mechanism, the situation in which the common side operating mechanism and the standby side operating mechanism are simultaneously closed is prevented, and the common side operating machine is prevented. There is an interlock between the structure and the standby side operating mechanism, and the interlock device ensures that the standby power source side is disconnected when the common side power source is closed, and the common power source side is disconnected when the standby power source side is closed. As shown, the interlock includes a first interlocking member and a second interlocking member that are symmetrically disposed. The first interlocking member includes a first cantilever 125, a first lever 130, a first shaft 128 and a first connecting member 129. The first cantilever 125 is welded to the main shaft 126 of the common side operating mechanism, and the first cantilever 125 passes through the first shaft. 128 is connected to one end of the first lever 130, and the other end of the first lever 130 is connected to the first connecting member 129, and the first connecting member 129 is mounted on the side plate of the standby side operating mechanism. When the common side operating mechanism is closed, the main shaft 126 of the common side operating mechanism is rotated to the closing position, and the first cantilever 125 rotates accordingly, and the first connecting member 129 is rotated by the first lever 130, and the first connecting member 129 operates on the standby side. The mechanism's opening shaft is pressed to disconnect the standby side operating mechanism. The second interlocking member includes a second cantilever 225, a second lever 230, a second shaft 228 and a second connecting member 229. The second cantilever 225 is welded to the main shaft 226 of the standby side operating mechanism, and the second cantilever 225 is passed through the second shaft. 228 is coupled to one end of the second lever 230, the other end of the second lever 230 is coupled to the second connector 229, and the second connector 229 is mounted to the side panel of the conventional side operating mechanism. When the standby side operating mechanism is closed, the main shaft 226 of the standby side operating mechanism is rotated to the closing position, the second cantilever 225 is rotated accordingly, the second connecting member 229 is rotated by the second lever 230, and the second connecting member 229 is operated on the common side. The mechanism's opening shaft is pressed to disconnect the common 'J operating mechanism.

In an embodiment, the switchgear 100 further includes a controller 1 10 that collects voltage signals of the common side power source and the standby side power source according to the collected signals. The voltage signal is switched between the common side power source and the standby side power source. In one embodiment, the inside of the controller 110 is composed of electronic circuits, and the controller 1 10 performs real-time logical judgment on signals collected from the common power supply side and the standby power supply side, respectively, when detecting that the common side power supply fails. Automatically signal the common side power supply and close the backup side power supply. Similarly, when it is detected that a fault occurs on the standby side power supply side, the signal is automatically disconnected from the standby side power supply and the common side power supply is closed, and the controller 1 10 can realize the automatic power conversion function.

If the controller 1 10 is not used, the transfer switch device 100 of the present invention can also manually realize the conversion of the power source, that is, the common side power source is found to be faulty, and the shutter button of the common side operating mechanism is pressed, and the common side contact of the contact system is used. Disconnect the common power supply and close the operating mechanism on the standby power supply side. The standby power supply side contact of the contact system is closed and the standby power supply is turned on to complete the power conversion. A similar operation is performed if the backup side power supply fails.

The initial position of the transfer switch device of the present invention is a middle position (ie, 0 position), and the transfer switch device 100 is installed in a circuit having two sets of power supply systems of a common power source and a backup power source. Under normal circumstances, the common power source is normally powered, and the manual operation is performed. The handle, or the motor is rotated by a remote control for one rotation, and the energy storage operation of the common side operating mechanism cam 1 15 and the standby side operating mechanism cam 1 16 is completed, and the pressing of the closed electromagnet is performed by pressing the common side operating mechanism. The brake button, the common side contact of the system is closed, and the power supply on the common side is turned on to achieve normal power supply.

With continued reference to the illustrated embodiment, the contact system is mounted with an arc extinguishing chamber 104 on the outside of the contacts of the movable contact 105 and the stationary contact 106. The arc extinguishing chamber includes a pilot arc piece 18, an arc chute piece 1 19 and a belt. The platen 120 of the hole. A plurality of arc chute sheets 1 19 are vertically arranged to intersect each other to facilitate arc striking. The arc extinguishing grid 1 19 is located in the middle of the arc extinguishing chamber 104, and the arcing fins 1 18 are mounted at the bottom of the arc chute sheet 19 . A plurality of perforated platens 120 are disposed above the arc chute sheet 19, i.e., the upper portion of the arc chute 104. A plurality of perforated platens 120 are stacked, and the positions of the holes in the plurality of perforated platens 120 are arranged to facilitate the elimination of free gas to achieve zero arcing. An arc is generated during the switching process of the switch, and the arc is introduced into the arc extinguishing chamber through the arc-lead piece, and the arc-extinguishing grid piece is arranged to be arc-extinguished, and a multi-layered perforated platen is installed at the top end of the arc extinguishing chamber. In order to eliminate the free gas generated by the arc, the purpose of zero arcing is achieved.

With continued reference to the drawings, the contact system has a busbar that connects the common side of the common side power supply and the backup side power supply. The busbar can be a common side connection busbar 108. A common side connection busbar 107 and a spare side connection busbar 109 may also be included. The soft contact is connected to a plurality of parallel contact plates 1 17 , and the movable contact 105 is mounted on the contact plate 1 17 . The contact plate 17 and the movable contact 105 are connected or disconnected from the corresponding power supply side by a combined operation or a split operation. The movable contact 105 can be thicker than the other contacts by three contacts, and a larger contact pressure can be obtained, and the matching static contact 106 is convex, which is convenient for arc striking. The contact system of the plurality of contact plates in parallel structure can realize a large-capacity switch by realizing a small operation force, and realizes a design concept of small volume and large capacity.

The transfer switch appliance of the present invention also has remote control and communication functions, and the remote control and communication functions are realized by the following components: Auxiliary contact 1 1 1 and terminal block 1 12 . Auxiliary contact 1 1 1 and terminal block 1 12 are respectively connected to corresponding functional components, including: closing electromagnet 121, shunt release 122, contactor 123, motor 124 and controller 1 10, by terminal block 1 12 and External connection for remote control and communication functions.

The transfer switch electric appliance of the invention adopts an energy storage type operating system, so that the large-capacity transfer switch electric appliance realizes the characteristics of small volume, large capacity, full function and high reliability.

The above embodiments are provided to those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept. The scope of the invention is not limited by the embodiments described above, but should be the maximum range of the innovative features mentioned in the claims.

Claims

Claim

A transfer switch device installed between a common side power supply and a backup side power supply, and comprising:

a front base and a rear base, the front base and the rear base combination defining a space;

a contact system installed in the space, the contact system is connected to and disconnected from the circuit, the contact system comprises a movable contact and a static contact, and the movable contact comprises three working positions of a common side, a middle position and a spare side; The operating system is mounted on the front base. The operating system is an energy storage mechanism that implements a split operation. The operating mechanism is connected to the movable contact through a connecting rod. The operating system includes a common side operating mechanism and a standby side operating mechanism connected by the gear set. The common side operating mechanism and the standby side operating mechanism are respectively mounted on the upper and lower sides of the front base, and the common side operating mechanism and the standby side operating mechanism are connected to the handle or the motor through a common shaft;

The handle or motor completes the energy storage operation for both the common side operating mechanism and the standby side operating mechanism within one revolution.

2. The change-over switchgear according to claim 1, wherein the common side operating mechanism and the standby side operating mechanism have an interlocking device, and the interlocking device ensures that the standby power source side is disconnected when the common side power source is closed. , Make sure that the common power supply side is disconnected when the backup power supply side is closed.

3. The changeover switch appliance of claim 2, wherein the interlocking device comprises a first interlocking member and a second interlocking member arranged symmetrically,

The first interlocking member includes a first cantilever, a first lever, a first shaft and a first connecting member, the first cantilever is welded to the main shaft of the common side operating mechanism, and the first cantilever is connected to one end of the first lever through the first shaft The other end of the first lever is connected to the first connecting member, and the first connecting member is mounted on the side plate of the standby side operating mechanism;

The second interlocking member includes a second cantilever, a second lever, a second shaft and a second connecting member, the second cantilever is welded to the main shaft of the standby side operating mechanism, and the second cantilever is connected to one end of the second lever through the second shaft The other end of the second lever is connected to the second connecting member, and the second connecting member is mounted on the common side The side panel of the operating mechanism.

4. The transfer switch appliance of claim 3, wherein

When the common side operating mechanism is closed, the main shaft of the common side operating mechanism rotates to the closing position, the first cantilever rotates accordingly, the first connecting member rotates by the first lever, and the first connecting member rotates the opening shaft of the standby side operating mechanism. Press to disconnect the standby side operating mechanism;

When the standby side operating mechanism is closed, the main shaft of the standby side operating mechanism rotates to the closing position, the second cantilever rotates accordingly, the second connecting member rotates by the second lever, and the second connecting member rotates the opening shaft of the common side operating mechanism. Press to disconnect the common side operating mechanism.

The switchgear according to claim 1, further comprising: a controller, wherein the controller collects voltage signals of the common side power source and the standby side power source, and uses the common side power source and the standby side power source according to the collected voltage signal. Switch between.

6. The transfer switch appliance of claim 1 wherein

The contact system is provided with an arc extinguishing chamber on the outer side of the contact of the movable contact and the static contact, and the arc extinguishing chamber includes a pilot arc piece, an arc extinguishing grating piece and a pressing plate with a hole, and the plurality of arc extinguishing grating pieces are vertically arranged to cross each other Arrangement, the arc-inducing piece is mounted on the bottom of the arc-extinguishing grid, a plurality of perforated pressing plates are arranged above the arc-extinguishing grid, a plurality of perforated pressing plates are stacked, and the positions of the holes of the plurality of perforated pressing plates are intersected Arrangement.

7. The transfer switch appliance of claim 1 wherein

The contact system has a busbar, the busbar is connected with the common side of the common side power source and the standby side power source, the busbar is connected with a plurality of parallel contact plates through a soft connection, the moving contact is mounted on the contact plate, and the moving contact has a protruding The contacts, the static contacts are convex.

8. The transfer switch appliance of claim 1 wherein:

The handle or motor stores energy to the common side operating mechanism through the common side cam, and the standby side operating mechanism stores energy through the spare side cam, and the common side operating mechanism and the standby side operating mechanism are cross-fitted in front. On the pedestal.

9. The transfer switch appliance of claim 1 wherein:

The front base and the rear base are insulating bases.

10. The transfer switch appliance of claim 1 further comprising an auxiliary contact, a terminal block, a closing electromagnet, a shunt release, and a contactor.